Tracking device.



Patented Oct. 8, 1912.

4 SHEETS-SHEET l.

G. P. BRAND.

TRACKING DEVICE.

APPLICATION FILED MAR.12,1910.

G. P. BRAND.

TRACKING DEVICE.

v APPLIOATION FILED Mums. 1910.

Patented Oct. 8, 1912.

4 SHEETS-SHEET 2.

Gr. P. BRAND.

TRAGKNG DEVICE.

APPLICATION FILED MAR. 12, 1910.

Patented Oct. 8, 1912.

gli" I j MM satten/umd coLuMmA PLANOGRAPH co.,\v/\$H1NGT0N, n. c.

GEORGE r. BRAND, or NEW YORK, N. Y.

TRACKING DEVICE.

Specification of Letters Patent.

Patented Oct. 8, 1912.

Application led March 12, 1910. Serial No. 548,986.

T o all whom it may concern:

Be it known that I, GEORGE I). BRAND, a citizen of the United States ofAmerica, and resident of New York, in the county of New York and Stateof New York, have invented certain new and useful Improvements inTracking Devices, of which the following is a specification.

This invention relates to certain new and useful improvements in meansfor assuring alinement of the perfor-ations in a music sheet and theducts of a tracker bar.

It is a well-known fact that in the operation of piano players andsimilar devices much trouble is experienced on account of the musicsheet not passing over the tracker bar properly, that is so that theperforations in the music sheet will properly aline with theirrespective ducts in the tracker bar. This is occasioned from variouscauses the shrinkage and swelling of the paper, the uneven winding ofthe sheet on the spools, unevenness in width at the opposite edges ofthe sheet, and numerous other causes which are well-known to thosefamiliar with the art. Various means have heretofore been devised forovercoming this objection. I am aware that it has been proposed to meetthis requirement by means of guides engageable with one or both edges ofthe music sheet. It has also been proposed to obviate this objection bymeans for automatically shifting the rollers or spools in the directionof their length. Again it has been proposed to move the tracker barautomatically in order to bring about the proper alinement. In suchdevices, however, it has been the practice to shift the sheet withrelation to the tracker bar or the tracker bar transversely withrelationto the direction of movement of the sheet So far as I am aware,however, I am the' first to provide means whereby the desired result isaccomplished by maintaining the once-adjusted relative positions of themusic sheet and tracker bar. That is, I do not move my tracker bar withrelation to the sheet nor the sheet with relation to the tracker bar.When once adjusted with relation to each other, the movement is such asto always maintain such relative position. By this means I obtain manyadvantages which will be hereinafter specifically set forth.

While in the present instance the invention will be described as hereinillustrated as used in connection with a piano player, it is evidentthat in many of its respects it is in no wise applicable alone to suchdevices, but will be found equally as serviceable in other arts, such,for instance, as paper perforating machines, weaving machines and otherdevices of such a nat-ure as to employ a perforated sheet. In itsemployment in a mechanical musical instrument, it serves toautomatically keep the holes in the sheet and the ducts in the trackerbar in alinement and insures the paper and the tracker always moving inparallelism. This insurance of parallelism is materially brought aboutby the disposition of the edge guide between the feed roll and thetracker bar, and the lateral movement of the take-up roll with thetracker bar. I employ an edge guide working from the fixed side of thesheet so that shrinking or swelling of the sheet is not allowed toaffect the operation of the mechanism, or, in other words, the mechanismis so constructed as to automatically compensate for any tendency toproduce injurious effects by such shrinking or swelling. The take-uproll is laterally movable to follow the paper and this take-up rollserves as a carriage with which the tracker bar is movable. The trackerbar is adjustable upon the carriage in addition to being movabletherewith in order to bring about proper alinement between the ducts ofthe tracker and the perforations of the music sheet when the music isprimarily placed in the machine. Provision is made also for adjustmentof the carriage in relation to the pneumatics which control the movementof the tracker. The edge guide is made most sensitive and this edgeguide actuates a controlling member, in thisI instance a valve whichcontrols ports which, in turn, control the movements of the tracker. Theedge guide always follows the movement of the sheet and through themovement of such edge guide the movement of the tracker is controlled sothat the two move in unison under all conditions. The carriage adjustingmeans serves also for the purpose of transposing when desired. Thepneumatics which actuate the carriage and tracker are operated under lowtension. The edge guide follows the sheet in its movements in bothdirections and is always in contact therewith. The movement of thetake-up roll compensates for unevenness of the sheet on the music rolland thus saves the edge of the paper from running on the flanges of reethe takeaip roll when the music is wound zig-Zag on the music roll,thereby making the re-wind more perfect as it is taken up perfect-ly onthe take-up roll, and, consequently, it re-winds back on the other spoolmore perfectly and avoids the music from running side to side when it isbeing rewound and thereby saves the edges from being turned over on theflanges of the music spool. By my invention it is not necessary that theflanges of the music spool always contact with the edges of the paper.lt would be much better to have a space between both edges of the musicAand the flanges as there would not be any noise made by the paperrubbing against the flanges when the machine is in operation.

My edge guide automatically adjusts itself to different makes of music,different makes of music rolls and, in fact, to any and all conditions,vary as they may, under which the device may be called upon to operate;one of these is the variation between the right end of the music spoolwhere it bears against the slotted flange and the inner face of theflange adjacent the edge of the music `sheet as there is agreatvariation in the different makes of music at this point. It will bereadily seen that thc take- .up roll naturally follows the music as farto the right as the edge of the music will travel.

1 dispense with the employment of springs, pivotally mounting the edgeguide and eounterbalancing the same and making provision for ease ofmovement of the valve without liability of sticking by employment ofthrottle pressure.

The tracker bar and carriage are automatically controlled by twopneumatics, one for moving in one way and the other for moving in theother way. @n the re-wind the edge guide is thrown out of the path ofthe edge of the sheet, so as to avoid contact therewith and also to movethe valve so as tc expose both of the openings controlled thereby, whichthrows both pneumatics into their central posit-ion and this serves tolock the tracker bar and carriage or lower roll during the re-wind.

Other objects and advantages of the invention will hereinafter appearand the novel features thereof will be particularly pointed out by theappended claims.

rllhe invention is clearly illustrated in the accompanying drawings,which, with the numerals of reference marked thereon, form a part ofthis specication, and in which I have shown one practical embodiment ofthe invention, but it is to be understood that the same is capable ofembodiment in other forms, and is subject to changes, variations andmodifications in details, proportions of parts, etc., without departingfrom the spirit of the invention or sacrificing any of its advantages.I, therefore, do not wish to restrictA myself to the particularconstruction hereinafter described, as it is evident that variousinstrumentalities employed may be modified and various other changesmade and l, therefore, reserve the right to avail myself of suchmodifications as come properly within the scope of the protectionprayed.

1n the accompanying drawings, Figure 1 is an elevation of suificient ofthe mechanism of a piano player to illustrate the construction andapplication of my present improvements. Fig. 2 is an enlargedperspective view of the take-up roll, the edge guide and the valveactuated thereby, the tracker bar and other parts being removed for thesake of clearness. Fig. 3 is an elevation of the parts seen in Fig. 2with a portion of the tracker bar shown in position. Fig. 41 is anenlarged detail showing the edge guide and connected parts in theposition they assume during re-winding. Fig. 5 is a vertical section onthe line 5 5 of Fig. 1. Fig. 6 is a section on line 6 6 of Fig. 5. Fig.7 is a detail showing the tracker-operating pneumatics in the positionthey assume when the tracker is moved in one direction. Fig. 8 is asimilar view showing the position of the pneuinatics when the trackerhas been moved in the opposite direction. Fig. 9 is a face view of theported valve seat and its support. Fig. 10 is a view at right angles toFig. 9 with portions in section. F 11 is a top plan of the same. Fig. 1Qis an enlarged detail in elevation showing the valve considerablyexaggerated as to its position with relation to the right hand port.Fig. 13 is a similar view showing the position of the parts with themusic sheet and, consequently, the edge guide moved to its eX- tremeright, the position of the valve with relation to the other port beingalso much exaggerated for the sake of clearness.

Like numerals of reference indicate like parts throughout the severalviews.

ln carrying out the invention the essential features thereof will, ofcourse, be adapted to the style of machine in which they are to beemployed. 1n the present instance, I have shown the application of thepresent invention to an automatic piano player otherwise of knownconstruction. The parts of such player, aside from those with which thepresent invention is closely associated, have not been illustrated asthe same are believed t-o be unnecessary. The motor, the re-windmechanism, the bellows and such other parts as are common to all musicplayers may be all of any of the well-known or approved forms ofconstruction.

@f the parts shown, 1 designates the motor, and 2 and S the pneumaticswhich control the wind and re-wind of the music sheet.

4 is a gate box of Well-known construction for controlling the tempo. 5is the connection between this gate box and the motor. 6 is the governoralso of well-known construction connected with the gate box 4 throughsuitable connection 7.

S is a connection from the governor 6 to the exhaust mechanism, notshown, but of usual construction and mode of operation.

9 is a portion of the frame supporting the motor and the other parts nowto be described.

10 is the music box or frame supporting the music roll, the tracker barand other parts of which 11 is the music spool supported in any of thewell-known or approved ways.

12 is the take-up roll. The left hand end 13 is made adjustable in anysuitable manner to compensate for the different widths of music sheet,the other end 14 being lixed with relation to the roll. The take-up roll12 has its journals 15 mounted in suitable bearings in the frame andupon these journals are mounted the curved arms 16.

17 is a rod disposed parallel with the takeup roll 12. One end of thisrod 17 is tastened solidly in the left hand arm and its other end passesthrough the right hand arm 16 where it is secured by a set screw 1S.These two arms are for the purpose of pulling t-he roller back andforth, to the right or lett. The right hand end of this rod is mountedfor endwise movement in a suitable bearing in the frame. Upon the outerend of the rod 17 is mounted the support 19 made adjustable thereon inany suitable manner, as by a set screw 20, so as to adjust the edge ofthe note sheetin lrelation to the right hand liange of the take-up roll.This support 19 has at its upper end an enlargement 21 provided withchambers 22 and 23 with which connect the flexible tubes 24 and 25respectively, which tubes connect with the diaphragms which control thevalves which control the pneumatics which actuate the tracker bar, aswill soon be described. The outer face of this enlarged portionconstitutes a valve seat and is provided with elongated ports oropenings 26 and 27, in this instance shown as disposed vertically, asseen best in Figs. 9 and 10.

2S is a. vert-ical member pivotally mounted at 29 upon thel right handarm 16 so as to move with the greatest of freedom. The upper end of thismember 28 terminates in a lateral member 30 with the upwardly extendingport-ion 31 which serves as the edge guide which is designed to be atall times in contact with the adjacent edge of the music sheet.Extending upwardly from the opposite side of the lateral portion 31 is alug 32 in which is loosely pivoted at 33 a link 34,

the opposite end of which is pivotally conl nected, as at 35, with theupright arm 36 of a ball crank lever pivoted at its angle, as at 37, tothe support 19, the short arm 3S of this bell crank lever carrying aweight 39. This upright portion 36 of the bell crank lever constitutesthe valve. It is of a width approximately the same as the distancebetween the outer boundary lines of the two ports 26 and 27 so that whenin its vertical position, both valves are entirely covered thereby.Almost infinitesimal movement of this valve in one direction or theother serves to open one or the other of the ports. In practice themovement of this valve is exceedingly slight, in fact hardly sufficientto be noticeable to the naked eye. Depending from the horizontal arm 3Sof the bell crank lever is an arm 40 olset at 4l, the lower portion 42normally being out of contact with the rod 43 of the re-wind mechanism.But, as soon as the re-wind of the music sheet is commenced, the arm 43contacts with the portion 42 and moves it from its normal verticalposition, as shown by dotted li-nes in Fig. 4, to the full line positionin said view. This moves the bell crank lever, the link 34, the weightedarm 3S, the upright member 28 and the edge guide 31 from their .normalposition, that represented by dotted lines, to the position in whichthey are indicated by tull lines in said Fig. 4. This causes the valveto disclose both ports 26 and 27, as indicated by the full line positionof these parts in said ligure. lVhen in this position with the portsopen, the pneumatics 44 and 45 are held in their central position, oneopposed to the other. Figs. 5 and 6 illustrate the mechanism forcontrolling these pneumatics by reason of the connections 24 and 25 withthe chambers 22 and 23 controlled by the said ports.

Referring to Fig. 5, 46 is the diaphragm in communication with the tube24, while 47 is the diaphragm in communication with the tube 25. Thesediaphragme control the movement of the valves 48 and 49, as seen in Fig.5 in a well-known way and further detailed description thereof does notseem necessary.

50 is a tube connect-ing the exhaust chamber 51 with the governor orregulating bellows 6, see Fig. 1.

The pneumatics 44 and 45 are connected rigidly together in any suitablemanner, as by the bar 52, so that they move in unison. From this barprojects a pin or the like 53 working in a bifurcation 54 of the lever55 pivotally mounted at 56 to some fixed support, while pivotallyccnnected with said bar 55, as at 57, is a rod 5S, the outer end ofwhich is screw-threaded, as seen at 59, and upon this screw-threadedportion is the bifurcated or split nut 60. Vithin the bifurcation, orbetween the two parallel portions of the nut extends a pin 61 dependingfrom the tracker bar 62 so that the tracker bar is compelled to movewith said nut. The end of the rod 58 is screw-threaded in the left handarm 16 of the carriage mechanism. It will be evident that this is butone of the numerous forms of connection between the tracker bar and thenut and any other wellknown means may be substituted therefor. I shouldconsider a reversal of such parts a full equivalent, that is two pinsdepending from the tracker bar and a single nut straddled thereby on therod. lt is to be understood that this tracker bar thus connected iscompelled to follow the movement of the take-up roll 12 back and forth.The tracker bar is capable of movement independent of the movement ofthe take-up roll by ad-l justment of the nut upon the screw-threaded rodfor the purpose of bringing the perforations of the music sheet intoproper alinement with the ducts of the tracker bar when the music isfirst put into the machine. Movement of the tracker bar may be producedin the same manner for transposing, that is for changing from one key toanother. The tracker bar is mounted for movement in the direction of itslength, being supported in any suitable manner for this purpose. It isguided so as to move at all times perfectly parallel with the takeuproll whether sucn movement be in unison with the take-up roll orindependent thereof as above described for the purposes set forth.

G3 is an arm or pointer movable with the carriage, in this instanceshown as extending` upward from the left hand arm 16, for cooperationwith an indicator Gal carried on the tracker bar 62 at the left hand endthereof. This pointer and indicato1 are for the purpose of indicating`when the music sheet is playing in its original key. Adjustment of thenut 60 changes the position of the indicator with relation to thepointer so as to designate the change of key.

As will be understood upon reference to Fig. l, the take-up roller hasits endv supports or pins 12"L mounted for free endwise movement insuitable bearings as 121 secured to the ends of the music box, said pinsworking through corresponding openings in the said ends of the box sothat the take-up roll 12 may move freely back and forth.

With the parts constructed and arranged substantially as hereinbeforeset forth, the operation, briefly stated, is as follows. lVhen the musicsheet is first applied to the music roll and the free end thereoffastened to the take-up roll in the usual manner and wound a couple oftimes or so around the take-up roll, or sufficient to bring the firstset of perforations in the music sheet over the ducts of the trackerbar, if the perforations of the paper then be found not to be in perfectalinement with the ducts of the tracker bar, the nut 60 is turned so asto move the tracker bar in one direction or the other, so as to bringthe holes in the tracker bar in perfect alinement with the perforationsof the music sheet. This relative relation of the tracker bar and musicsheet remains unchanged regardless of the position of the music sheet onthe music roll. My improvement compensates for any change of position ofthe edge of the music sheet with relation to the spool on which it iswound and from which it is being un- Wound.

ln Fig. l2 l have shown the sheet as in a condition which it oftenassumes, that is, instead of being wound with its edge parallel with theend or fiange of the spool, it is wound at an angle thereto andunevenly.

It being understood that the edge guide 31 is at all times in contactwith the right hand or fixed edge of the music sheet 65, as the music isplayed and the music sheet unwound from the roll 11, the edge guidebeing so sensitive in its movement, any lateral movement of the musicsheet to the right upon the music spool will move t-he edge guide to theright, by reason of the pressure of the edge of the music sheet thereon.This pressure of the music sheet upon the edge guide tends to rock thevertical member 28 upon its pivot 29, moving its ripper end to the rightand this, by reason of the pivotal connection 34 with the valve, gives aslight movement to the latter to the right so as to allow of the ingressof air through the port 26 and this inrushing air passes through thetube 25 to the valve chest of the pneumatics f4- and f5 acting upon thediaphragm 1.1.6 and actuating the valves -19 in a well-known way,putting the interior of the bellows l5 into communication wit-h theexhaust and closing it to the atmosphere. This causes the bellows orpneumatic 4:5 to be deflated sufficiently to cause its movable member tomove to the right enough to give to the connecting bar 52 sufficientmovement to t-he right to move the tracker bar sufficiently tocompensate for or keep up with the movement of the music sheet. Thetake-up roll being movable with the tracker bar, of course, follows itin this movement. .it is to be understood that the movement of thetracker and, consequently, of the valve 36 is, as a rule, almostinfinitesimal and is hardly perceptible to the eye. The mechanism isnecessarily very sensitive in its movement and it is essential that thevalve 36 should open but slightly. To insure this, 1 make the bleedholes 66 exceedingly small, as seen in Fig. 5, so that as soon as themusic sheet is moved either way, the small inrush of air through eitherport 26 or 27, according to the movement of the sheet, rushes throughits corresponding tube 2li or 25 leading to the diaphragms 4:7 or 46,causing immediate action of the diaphragms 46 or 47, operating t-hevalves 48 or 49 in the well-known manner and closing the pneumatic 45 or44 to the atmosphere and putting the same in communication with theexhaust, thereby causing the movement of the lever 55 in eitherdirection, according to the movement of the sheet, thereby moving thecarriage and tracker bar and the valve seat 21 and closing the port 26or 27 the bleeds cause the diaphragms and all the mechanism mentioned toreturn to their normal positions. Bringing the valve seat back to thisposition closes both ports 2G and 27 and the bleeds allow the return ofthe valve 4S or 49, leaving the mechanism in this position until furtheratfected by the sheet in this manner. It is to be understood that themusic sheet moves laterally no one time any great distance but thatthere may be numerous movements at intervals during the unwinding ot thesheet trom the music roll. During the steady movement of the sheetwit-hout any lateral displacement, the tracker bar and carriage stayimmovable. lhen the music sheet moves laterally to the lett, the edgeguide 31 follows the same, being kept constantly in contact therewith byreason of the weight 39, the natural tendency ot which is always to keepthe edge guide to the lett. This lateral movement of the music sheet tothe left causes the valve 36 to move sutliciently to allow air to passin the port 27, which, passing through the tube 24, actuates thediaphragm 47 and the valves 48 to put the pneumatic 44 in communicationwith the exhaust and close it to t-he atmosphere. When this occurs, themember 55 is moved so as to move the rod 58 and, conse uently, thetracker bar and the carriage to the lett, so as to keep the holes of thetracker bar directly in register with the pertora-tions ot the musicsheet.

Fig. 7 indicates the condition ot the pneumatics and the position of themember 55 when the tracker bar has been moved to the lett to the fullextent permissible by the condition of the music sheet in Fig. 12, whileFig. 8 shows the condition of the same parts when the tracker bar ismoved to the right so tar as permitted by the condition of the musicsheet, as shown in Fig. 13. It will be understood that under conditionsot less movement ot the tracker bar, the parts seen in Figs. 7 and 8will assume positions intermediate those therein illustrated.

Fig 4 shows the position ot the parts ready for re-winding. Under theseconditions, the member 28 and valve member i0 are moved to the rightsutliciently to entirely disclose the ports 26 and 27. Under theseconditions, the pneumatics 44 and 45 are held in their central positionas the condition ot both is the same, both being put in communicationwith the exhaust and closed to the atmosphere. The parts seen in Fig. 4are thrown into such position by reason or" the engagement ot the end otthe rod 43 with the depending member 42 as the rewind mechanism isthrown into play. This movement of the rod 43 to the lett is caused bythe inliation of the pneumatic 2 as the pneumatic 3 is deilated, 67being the clutch actuating rod carried by said pneumatic 2. As this windand rel-wind mechanism is o-ld and well-known in the art, it is notthought necessary to show it in detail or any of its connections.

The method herein disclosed is not claimed in this application as itforms the basis of a separate application, filed as a division hereof,June 27, 1910, Serial No. 569,037.

That is claimed as new is 1. The combination with a take-up spool for anote sheet and a tracker bar adjustable independently thereof, automaticmeans for simultaneously moving the tracker bar and take-up spooltransversely in relation to the travel of the note sheet.

2. A take-up spool for a note sheet, a tracker bar mounted for movementin unison therewith, and means including means movable with the trackerbar for simultaneously moving said tracker bar and take-up spool in thedirection of their length.

8. A tracker bar and a take-up roll for a note sheet mounted tormovement in unison therewith, and automatic means including meansmovable with the tracker bar controlled by the lateral movement ot thenote sheet tor simultaneously moving the tracker bar and take-up rolltransversely in relation to the travel of the note sheet.

4. A tracker bar and a take-up roll for a note sheet and automatic meansincluding means movable with the tracker bar for moving the latter andthe take-up roll simultaneously in the same direction.

5. A tracker bar and a take-up roll mounted for movement in unison, andmeans including means movable with the tracker bar 'tor automaticallymoving the same and the take-up roll.

G. A. tracker bar, a take-up roll mounted for movement in unisontherewith, and means tor adjust-ing the tracker bar independently of thetake-up roll.

7. An automatically controlled carriage, a tracker movable therewith andtransposing means on the carriage connected with the tracker formovement independent ot the carriage to thereby effect an independentmovement of the tracker bar.

8. A tracker and a take-up roll mounted Jfor movement in unison orindependently ot each other, and automatic means for simultaneouslymoving said tracker and take-up roll transversely in relation to thetravel of a note sheet.

9. A tracker bar and a take-up roll for a note sheet mounted formovement in unison and movable means mounted for simultaneous movementwith the tracker bar and having constant contact with the edge of thenote sheet and following the same in its transverse movements in bothdirections.

10. A tracker bar and a take-up roll for a note sheet mounted formovement in unison, an edge guide in constant contact with one edge ofthe note sheet, and means movable with the tracker bar controlled bysaid edge guide for automatically giving movement t said tracker bar andtake-up roll.

11. A tracker bar, a take-up roll for the music sheet mounted formovement in unison therewith, an edge guide for constant contact withone edge of a note sheet, a valve seat with a plurality of ports, avalve for said ports operated by said edge guide for causing the trackerbar to travel to the right or left and following the note sheet inmovement in either lateral direction.

12. A movably mounted tracker bar and a take-up roll for a note sheetmounted for movement in unison, a pneumatically controlled tracker baroperating mechanism controlled by means movable with the tracker bar andan edge guide for constant contact with an edge of the sheet operativelyconnected with the pneumatic means to control the same to control saidpneumatic means in both lateral directions of the sheet.

13. A tracker bar mounted for endwise movement, means for moving thesame, a take-up roll for the music sheet mounted for movement in unisonwith said tracker bar, pneumatic means controlled by means movable withthe tracker bar for moving the tracker bar and movably mounted means forconstant contact with an edge of the note sheet operatively connectedwith the pneumatic means to control the same for controlling themovements of the tracker bar in both directions from one edge of thesheet.

14. A movably mounted tracker bar, means for moving the same, a take-uproll for the music sheet mounted for movement in unison with saidtracker bar, pneumatic means connected to and controlled by meansmovable with the tracker bar for moving it in opposite directions, and amovably mounted edge guide adapted for constant contact with one edgeonly of a note sheet operatively connected with the pneumatic means tocontrol the same for controlling said pneumatic means for actuating thesame to move the tracker bar in both directions.

15. A movably mounted tracker bar, a take-up roll for the music sheetmounted for movement in unison with said tracker bar, pneumatic meansfor movingthe same in both directions, said pneumatic means beingcontrolled by meansy movable with the tracker bar, and a pivotallymounted vedge guide for constant contact with one edge only of a notesheet and constructed to control said pneumatic means for lateralmovement of the sheet in either direction.

16. A movably mounted tracker bar, a take-up roll for the music sheetmounted for movement in unison with said tracker bar, means for movingthe same for alinement with a note sheet and independent means formoving the same for transposing.

17. A movably mounted tracker bar, means for moving the same foralinement with a note sheet, independent means for moving the same fortransposing, and a take-up roll movable with the tracker bar.

18. A movably mounted tracker bar, means for moving the same foralinement with a note sheet, independent means for moving the same fortransposing, a take-up roll movable with the tracker bar, and meanswhereby the tracker bar may be adjusted independently of the note sheet.

19. A tracker bar, a take-up roll movable in unison therewith, means formoving the tracker bar independently of the take-up roll, and means foradjusting the tracker bar and take-up roll simultaneously.

20. A movable tracker bar, pneumatic means for moving the tracker bar,adjustable controlling means therefor, and an edge guide mountedindependently of and pivotally connected with said controlling means.

21. A movable tracker bar, pneumatic means for operating the tracker barand adjustable controlling means for the tracker bar movable foradjusting the tracker bar with relation to a note sheet.

22. A movably mounted tracker bar, a take-up roll for the music sheetmounted for movement in unison with said tracker bar, pneumatic meanscontrolled by means movable with the tracker bar for controlling thesame, and a single valve for controlling said tracker bar in bothmovements of a sheet.

23. A movably mounted tracker bar, pneumatic means controlled by meansmovable with the tracker bar for actuating the same, an edge guide forconstant contact with one edge only of a sheet, and means movablethereby for controlling said pneumatic means.

24. A movably mounted tracker bar, a take-up roll for a note sheetmounted for movement in unison with said tracker bar, pneumaticactuating means therefor operatively connected with and controlled bymeans movable with the tracker bar, and means for controlling themovement of said pneumatic actuating means from the fixed edge of a notesheet in both the back and forth lateral movement thereof.

25. A movably mounted tracker bar, a take-up roll for a note sheetmounted for movement in unison with said tracker bar, a plurality ofpneumatics for moving said tracker bar and movable means in contact withand controlled from one edge ot a sheet tor automatically controllingsaid pneumatics.

2G. A movably mounted tracker bar, a take-up roll for a note Asheetmounted for movement in unison with said tracker bar, pneumatic meansfor actuating the same, and a slide valve for controlling saidpneumatics tor actuation of the bar in either direction ot its endwisemovement.

27. A movably mounted tracker bar, a take-up roll :tor a note sheetmounted for movement in unison with said tracker bar, pneumatic meansfor actuating the same, a slide valve tor controlling said pneumaticstor actuation ot the bar in either direction of its endwise movement,and an edge guide controlling said valve in both directions.

28. A movably mounted tracker bar, a take-up roll for a note sheetmounted for movement in unison with said tracker bar, pneumatic meanstor actuating the same in both directions of its endwise movement, apivotally mounted slide valve tor controlling the pneumatics, and anedge guide movably connected with said valve and movable in contact withan edge of a sheet in its lateral movements in both directions.

29. A movably mounted carriage, and a movably mounted tracker barmounted to move with or independently of said carriage, a take-up rollfor the note sheet mounted for movement in unison with the tracker bar,and interengaging means between said carriage and tracker.

30. A movably mounted tracker bar, a pivotally mounted edge guideadapted to contact with the edge of a traveling sheet., and meansmovably connected therewith for throwing the edge guide out of operativeposition by movement of the re-wind mechanism, said edge guide beingoperatively connected with the tracker bar.

31. A movably mounted tracker bar, pneumatic means for actuating thesame, a pivotally mounted edge guide adapted to contact with the edge ofa traveling sheet, and means whereby the same is thrown out oitoperative position by the throwing .in ot the re-wind mechanism, saidedge guide being operatively connected with the tracker bar.

32. A movably mounted tracker bar and take-up spool mounted to move inunison, an edge guide for controlling the movements ot said tracker barand take-up spool, and means tor locking said tracker bar and takeup.spool when re-winding the music sheet.

33. A movably mounted tracker bar, pneumatic means connected with thetracker for actuating the same, an edge guide adapted to contact withthe edge of a traveling note sheet and operatively connected with saidpneumatic means, and means cooperating with said edge guide tor lockingsaid bar against movement through said pneumatic means duringre-windine'.

Bet. A movably mounted tracker bar, pneumatic means controlled by meansmovable with the tracker bar for moving the same, an edge guide mountedto contact with one edge only of a traveling note sheet and operativelyconnected ywith said pneumatic means, and means for throwing said guideout ot operative position and locking the tracker bar against movementupon the throwing in of the re-wind mechanism.

A take-up spool mounted to move in the direction of its length, aslidingly mounted tracker bar, means for moving the tracker bar in bothdirections by the transverse movement of a note sheet, and connectionsbetween the tracker bar and take-up spool whereby the tracker bar may beadjusted independently of the take-up spool.

36. A movably mounted tracker bar, a movably mounted take-up spool andconnections between the same and controlled by means including meansmovable with the tracker bar to move said tracker bar and take-up spoolin unison.

37. A movably mounted tracker bar, a movably mounted take-up spool, andconnections between the same whereby they move in unison, said meansserving also for adjustment of the tracker bar independent of thetake-up spool.

38. A movably mounted tracker bar, a movably mounted take-up spool, andconnections between the same whereby they move in unison, saidmeansserving also for adjustment of the tracker bar independent ot' thetake-up spool and further tor the purpose of transposing.

39. A movably mounted tracker bar, aA carriage endwise movabletherewith, and an edge guide mounted on the carriage and adapted tocontact with the edge ot a traveling note sheet, and pneumatic meansoperatively connected with said edge guide and tracker bar.

ett). A movably mounted tracker bar, a carriage endwise movabletherewith, and an edge guide pivotally mounted on the carriage andadapted to Contact with the edge of a traveling note sheet, andpneumatic means operatively connected with said edge guide and trackerbar.

al. A movably mounted take-up roll, a carriage therefor, a movablymounted tracker bar, an edge guide adapted to contact with the edge ot atraveling note sheet, means whereby said edge guide and carriage move inunison, and mechanism intermediate said edge guide and tracker-bar,operatively connected with the latter. y

42. A movably mounted tracker bar, a movably mounted take-up roll, acarriage for moving said take-up roll, and an edge guide on the carriageindependent of the tracker bar and adapted to contact with the edge of atraveling note sheet.

43. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar and adapted to contact with the edge of atraveling note sheet, and pneumatic means connected with the tracker barand controlled by the movement of said edge guide.

44. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar and adapted to contact with the edge of atraveling note sheet, pneumatic means connected with the tracker bar andcontrolled by the movement of said edge guide, and means `for moving thetracker bar independently of the take-up roll.

45. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar and adapted to contact with the edge of atraveling note sheet, pneumatic means connected with the tracker bar andcontrolled by the movement of said edge guide, and means for moving thetake-up roll with relation to the edge of the note sheet.

46. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar and adapted to contact with the edge of atraveling note sheet, pneumatic means controlled by the movement Of saidedge guide, means for moving the tracker bar independently of thetake-up roll, and means for moving the take-up roll with relation to theedge of a note sheet.

47. A movably mounted carriage, a takeup roll movable therewith, amovably mounted tracker bar, connections between the take-up roll andtracker bar, an edge guide independent of the tracker bar and adapted tocontact with the edge of a traveling note sheet, and pneumatic means foractuating the tracker bar controlled by the movement of the edge guide.

48. A movably mounted take-up roll, a tracker bar mounted for movementindependent thereof, connections between the take-up roll and trackerbar, an edge guide movable independently of the tracker bar and adaptedto contact with the edge of a traveling note sheet, and means for movingthe tracker bar and take-up roll in unison.

49. A movably mounted carriage, a takeup roll carried thereby, a movablymounted tracker bar, connections between the take-up roll and trackerbar, and a counterweighted edge guide connected with the tracker bar andcarried by said carriage for constant contactwith the edge of a notesheet and following its lateral movements in both directions.

50. A movably mounted tracker bar, a take-up roll mounted for movementin unison with said tracker bar, pneumatic means for controlling thesame, and throttle mechanism for said pneumatics, and an edge guideoperatively connected with and controlling said throttle mechanism.

51. A movably mounted carriage, a takeup roll movable therewith, amovably mounted tracker bar, an edge guide independent of the trackerbar and adapted to contact with an edge of a traveling note sheet,pneumatic means for actuating the tracker barl controlled by themovement of the edge guide, and throttle mechanism for controlling saidpneumatics.

52. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar and adapted to contact with an edge of atraveling note sheet, pneumatic means connected with the tracker bar andcontrolled by the movement of said edge guide, and forming throttlemechanism for said pneumatics.

53. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar and adapted to contact with an edge of atraveling note sheet, pneumatic means connected with the tracker bar andcontrolled by the movement of said edge guide, means for moving thetracker bar independently of the take-up roll, and forming throttlemechanism for said pneumatics.

54. A movably mounted tracker bar, a movably mounted carriage, atake-upl roll carried thereby, an edge guide pivotally mounted on thecarriage independent of the tracker bar and adapted to contact with anedge of a traveling note sheet, pneumatic means connected with thetracker bar and controlled by the movement of said edge guide, means formoving the take-up roll with relation to the edge of the note sheet, andforming throttle mechanism :tor said pneumatics.

55. A movably mounted tracker bar, a movably mounted carriage, a take-uproll carried thereby, an edge guide pivotally mounted on the carriageindependent of the tracker bar, pneumatic means connected with thetracker bar and controlled by the movement of said edge guide, means formoving the tracker bar independently of the take-up roll, means formoving the take-up roll with relation to the edge of the note sheet, andforming throttle mechanism for said pneumatics.

5G. The combination with a movable tracker bar, a carriage and a take-uproll mounted for movement in unison therewith and adjustable withrelation to the tracker bar, of an indicator movable with the carriagefor indicating the relative positions of the tracker bar and take-uproll.

57. The combination with a take-up roll and a tracker bar mounted forindependent or simultaneous movement transversely to the line of travelof a music sheet, and an edge guide connected with the tracker bar andadapted for constant contact with one edge only of a note sheet, ofmeans movable with the take-up roll and coperating means on the trackerbar for indicating the relative positions of the take-up roll andtracker bar.

58. In a device of the character described, a tracker bar, a take-uproll mounted for movement in unison therewith, an edge guide adapted tocontact with one edge only of a traveling note sheet and interposedbetween the music roll and the tracker bar and controllable by meansmovable with the tracker bar.

59. In a device of the character described, a slidably mounted trackerbar, a take-up roll mounted for movement in unison with the tracker bar,and automatic means for actuating the same embodying an edge guide forcontact with the edge of a music sheet between the music roll and thetracker bar.

60. In a device of the character described, a slidably mounted trackerbar, pneumatic means for actuating the same, and a movably mounted edgeguide for contact with the edge of a music sheet prior to its passageover the tracker bar, a take-up roll movable simultaneously with thetracker bar transversely in relation to the travel of the note sheet,said edge guide being operatively connected with the tracker bar.

Signed by me at Washington, D. C., this 9th day of March 1910.

GEORGE I). BRAND. Vitnesses:

E. I-I. BOND, JOHN SCRIVENER.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington, .'D. C.

